Banker: Type Studies in the Hydnaceae 
63 
Schaeffer’s description and figures. These conform in all re- 
spects to the American plants which we have placed in this segre- 
gation. In Persoon’s herbarium at Leyden are a number of 
specimens labelled in Persoon’s handwriting “ Hydnum pullum 
Schaeff.” These are typical specimens of our form. 
In Fries’s herbarium there is no true type specimen of H. mela- 
leucum Fr., but the specimens there placed under this name in- 
clude plants collected as early as 1866 in Upsala by Th. Fries and 
in Mustiala by P. A. Karsten. These are seemingly identical 
with our plants. Fries also regarded H. pullum Schaeff. as a 
synonym of his species.'* The lack of odor noted by Fries is a 
character on which we think too much stress may be laid. Our 
plants yield more or less odor. 
There are several specimens in Persoon’s herbarium labelled 
“ Hydnum leptopus,” some of these in Persoon’s handwriting. 
They are nearly all typical plants of this segregation. Fries 
regarded Persoon’s species as a synonym of H. graveolens Delast. 
There appears to be no type of H. graveolens Delast, at Upsala. 
The only specimens found there referred to Delastre’s species 
were in Starbuck’s collection from Sweden and these forms 
approached more closely to our conception of Phellodon amicus 
(Quel.). At Kew similar forms were commonly referred to H. 
graveolens Delast. Fries’s description of H. graveolens Delast, 
also points in some respects to the amicus type, particularly his 
emphasis upon the word molli in his description of the character 
of the pileus. In fact, it might reasonably be claimed that in 
Fries’s conception H. graveolens Delast, includes the forms here 
treated as Phellodon amicus (Quel.), in which case the name 
graveolens should prevail for these plants as being the older name. 
By any other interpretation it is difficult to understand how Fries 
conceived any difference between H. graveolens Delast, and H. 
melaleucum Fr. On the other hand his figure of PI. graveolens 
Delast, in his leones Selectae Hymenomycetes pi. 6. f. i is much 
more nearly our conception of P. pullus (Schaeff.) than of P. 
amicus (Quel.). Moreover, it appears to have been Delastre’s 
idea of the species. In Persoon’s herbarium at Leyden is a speci- 
® Fries, Syst. Myc. i: 406. 1821. 
‘Fries, Epicr. Myc. 510; Hym. Eur. 616. 
